**1. Dab tsi yog qhov txawv ntawm seamless thiab welded?**
Seamless yeeb nkab yog tsim los ntawm kev tho cov khoom steel hlau los tsim ib lub raj hollow yam tsis muaj seams lossis pob qij txha. Cov txheej txheem no tsim cov yeeb nkab nrog cov qauv sib xws nyob ib puag ncig nws tag nrho ib puag ncig. Welded yeeb nkab, ntawm qhov tod tes, yog ua los ntawm dov ib lub phaj steel los yog daim ntawv rau hauv ib lub cylindrical zoo thiab ces welding seam ua ke. Qhov no ua rau cov yeeb nkab uas muaj cov kab uas pom pom. Lub ntsiab sib txawv yog nyob rau hauv cov txheej txheem tsim: seamless kav tsis muaj welded seam, thaum welded kav ua.
**2. Dab tsi yog qhov txawv ntawm ASTM A358 thiab ASTM A312?
ASTM A358 npog hluav taws xob- fusion-welded austenitic stainless hlau kav npaj rau siab - kev pabcuam kub. Cov kav dej no tsuas yog welded xwb. ASTM A312 npog ob qho tib si seamless thiab welded austenitic stainless hlau kav rau cov kev pabcuam corrosive thiab siab -kev siv kub. Qhov sib txawv tseem ceeb yog A312 yog tus qauv dav dua uas suav nrog ob txoj hauv kev tsim khoom (tsis muaj seamless thiab welded), thaum A358 tshwj xeeb rau hluav taws xob - fusion- welded kav, feem ntau siv rau cov kab loj dua.
**3. Dab tsi yog qhov zoo dua seamless lossis welded yeeb nkab fittings?**
Tsis muaj lus teb kiag li uas yog "zoo dua," raws li kev xaiv nyob ntawm daim ntawv thov. Seamless fittings feem ntau nyiam rau cov kev pabcuam tseem ceeb uas cuam tshuam nrog kev kub siab, qhov kub thiab txias, lossis ib puag ncig corrosive vim tias lawv tsis muaj vuam seam, uas yog qhov muaj peev xwm ntawm qhov tsis muaj zog. Lawv muab ntau dua uniformity thiab lub zog. Welded fittings yog tus nqi ntau dua- ua haujlwm tau zoo thiab zoo kawg nkaus haum rau qis rau nruab nrab- cov ntawv siv siab, xws li cov kav dej, qis- siab chav, thiab siv cov qauv siv. Qhov kev txiav txim siab yog nyob ntawm qhov sib npaug ntawm qhov xav tau lub zog, kev nyab xeeb, thiab pob nyiaj siv.
** 4. Puas yog cov kav dej seamless muaj zog dua welded?**
Feem ntau, yog, seamless kav yog suav hais tias muaj zog tshaj welded kav. Vim tias lawv tsis muaj vuam seam, lawv muaj cov qauv homogeneous nrog lub zog sib xws thiab cov nplej ntws nyob ib ncig ntawm tag nrho cov ncig. Qhov no ua rau lawv tsis tshua muaj kev cuam tshuam rau kev ua tsis tiav nyob rau hauv siab. Txawm li cas los xij, niaj hnub vuam thev naus laus zis tau txhim kho qhov zoo ntawm cov kav dej welded, thiab rau ntau cov qauv siv, qhov sib txawv ntawm lub zog yuav tsis tsim nyog. Tab sis rau cov kev pabcuam uas xav tau tshaj plaws, cov kav dej seamless feem ntau tau teev tseg rau lawv lub zog thiab kev ntseeg tau zoo dua.
**5. Dab tsi yog peb hom yeeb nkab fittings?**
Cov yeeb nkab fittings yog categorized los ntawm lawv txoj haujlwm. Peb yam tseem ceeb yog:
* ** Luj tshib:** Siv los hloov cov kev taw qhia ntawm qhov ntws hauv cov kav dej (piv txwv li, 90-degree lossis 45-degree luj tshib).
* ** Tees:** Siv los ua ke lossis faib cov dej ntws, tsim T- zoo li kev sib txuas.
* **Reducers:** Siv los txuas cov kav dej ntawm cov kab sib txawv, tso cai rau kev hloov pauv hauv kab loj.
